ABB CI626A 3BSE005029R1 PLC自动化 备件

ABB CI626A 3BSE005029R1  PLC自动化 备件

混合励磁电机的调速特性 混合勵磁同步电动机作为一种新型永磁电机，同时具备永磁同步电动机高功率密度和高效率的优点，以及电励磁同步电动机气隙磁场易于调节的特点。提出了一种混合磁极式的混合励磁同步电动机，推导了该混合励磁同步电动机的数学模型，得到了混合励磁同步电动机定子电流矢量轨迹 混合励磁电机的调速特性取决于其励磁方式和控制方法。 对于混合励磁电机来说，其永磁体和励磁线圈都可以提供磁场，因此它的励磁方式可以分为串联励磁和并联励磁两种。 对于串联励磁的混合励磁电机来说，其调速特性与传统的串联励磁直流电机类似，即随着电枢电流的变化，电机的转矩和转速也会相应地变化。但与传统的串联励磁直流电机不同的是，混合励磁电机的转子是永磁体，因此其反电动势随着转速的增加而线性增加。这就需要根据转速来调整电枢电流，以保持电机的转速稳定。

ABB CI626A 3BSE005029R1  PLC自动化 备件

Speed regulation characteristics of hybrid excitation motor As a new type of permanent magnet motor, hybrid excitation synchronous motor has the advantages of high power density and high efficiency of permanent magnet synchronous motor, and the air gap magnetic field of electrically excited synchronous motor is easy to adjust. A hybrid excitation synchronous motor with mixed magnetic poles is proposed, and its mathematical model is deduced. It is concluded that the speed regulation characteristics of hybrid excitation synchronous motor with stator current vector trajectory depend on its excitation mode and control method. For hybrid excitation motor, both permanent magnet and excitation coil can provide magnetic field, so its excitation mode can be divided into series excitation and parallel excitation. For the series-excited hybrid excitation motor, its speed regulation characteristics are similar to those of the traditional series-excited DC motor, that is, with the change of armature current, the torque and speed of the motor will change accordingly. However, unlike the traditional series excitation DC motor, the rotor of hybrid excitation motor is a permanent magnet, so its back electromotive force increases linearly with the increase of rotating speed. Therefore, it is necessary to adjust the armature current according to the rotating speed to keep the rotating speed of the motor stable.

ABB CI626A 3BSE005029R1  PLC自动化 备件